I am using HTML5 fetch API.

var request = new Request('https://davidwalsh.name/demo/arsenal.json');

fetch(request).then(function(response) {
    // Convert to JSON
    return response.json();
}).then(function(j) {
    // Yay, `j` is a JavaScript object
    console.log(JSON.stringify(j));
}).catch(function(error) {
    console.log('Request failed', error)
});

I am able to use normal json but unable to fetch the data of above api url. It throws error:

  
Fetch API cannot load https://davidwalsh.name/demo/arsenal.json. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost' is therefore not allowed access. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.